You're not really explaining much there mate. The old Fifa's are undoubtedly cack, while 2009 is a completely different kettle of fish. Hence why many old Fifa fans have gone off the new version, it's too deep and Pro Evo like for them to cope with. When i say Pro Evo like, i mean it takes the best parts of Pro Evo and throws out the shit.
What, you want me to explain every bit in detail?
Okay
Tackling: standing tackle was incredibly over-effective, but was only activated by holding O when next to the player (ie if you didn't press the button your player wouldn't be interested in the ball). Slide tackle wasn't very good - often gave away fouls. I also remember on old FIFA's there used to be a special button or button combo that gave away a straight red foul - I used to use it if the opponent had an empty net.
On FIFA 2009 the standing tackle is in fact more effective than ever - get nearly any of your players locked in a barging battle with an opponent and you have a good chance of winning the ball. However, the slide tackles this year have been improved greatly - unlike on any previous PES or FIFA title it really feels like your player is forcibly lunging himself in to win the ball - on other games it feels like they briefly slide, then get up again, with minimal effort. Side note: player reactions to tackles on FIFA deserve an award of their own.
Passing: the X pass on old FIFAs, and also the square pass (long ball/cross) were guided by lasers to the feet of your teammate. However, it has to be said that passing is the majority of a game. In nearly every FIFA the passing is sluggish - the ball travels slowly and one touch passing often didn't work, despite as I previously mentioned, the amount of stupid additions to the game EA made. Crossing into the box was a bit better - FIFA got the early cross down to a tee early on. It opened the game up a bit because it meant you could properly seige the opponent's goal. Through balls... they basically varied from being very nicely guided for the run of the teammate, to being a completely manual pass (depending on direction the player is facing and length held) and didn't react to the teammate at all. This led to problems with the game often switching your control to the wrong player - the one who it was intended for you can't change to.
On FIFA09 one touch passing has been implemented very well. However, I still get the FIFA feeling (and my main reason for disliking all recent FIFA titles) of the ball being sluggish when travelling between players - it slows a lot more than it should and reduces the effect of a quick attacking burst. However, this is less than it was on old FIFA games. Bizarrely, considering how well FIFA did early crosses on old games - it occasionally doesn't work at all on 09, the ball just flying out of play as if you hadn't held L1 (or whatever the early cross button is). Also, the double tap square cross is useless, it never even reaches the near post. Low crosses and normal crosses are alright - but FIFA has appaling shots from heading, so the whole crossing issue is redundant almost. Through balls are very sweet on FIFA - even in my first game I was slicing the gap between the centre back and full back to play in my winger. However, it's incredibly easy to do, and when you combine this with lofted through balls, you are getting several certain chances per match, just like the old lofted through ball on FIFAs used to do.
Shooting: on old FIFAs this has to have been the worst part. Your shot basically only ever went in a straight line perpendicular or 45 degrees to the goalline. So as soon as you were 1 on 1 with the keeper, just get in line with the far post, and you should slot it in every time. Long shots were quite tricky though. On very old FIFAs there wasn't even a power bar - it was as guided as the passing. Shots from headers never worked. Volleys were just normal shots basically - you could hit perfect lobbed shots (lob shots being too easy on FIFA anyway) from a first time volley, very unrealistic.
On 09, I think the close range shooting is ruined by the incredibly easy placed shot. Long shots, 9 out of 10 times will look good, then start taking off to the skies, occasionally they will test the keeper. A massive weak point for FIFA09. Volleys are a good point though, the physics for volleys are very realistic. Headered shots are again awful. Shooting is probably the most changed from old FIFAs.
Dribbling: on old FIFA's, the best players were slightly faster, and otherwise every player was identical. So if you had anyone with an overall rating of over 80 against someone with a rating of below 70, they would beat them every time. The trick stick was a crap addition.
On FIFA09, trick stick is still useless (the only good tricks are very hard to use in a match). They have rectified the dribbling problem by making it an even playing field - thanks to the brilliant tackling, you can't beat anyone with anyone. However, the first touch and knock on controls from the right stick are brilliant, and I miss them in PES.
I hope this is in as much detail as possible for you?