I'm back, time for an essay:
Terrible jokes aside,
Variety:
There are only five 5 star teams in the game atm:
Inter Milan
Manchester United
Chelsea
Barcelona
Real Madrid
This is a down point for 5 star teams, however,
4.5 star teams used at Melbourne:
Arsenal
Tottenham
Manchester City
Dortmund
Aston Villa (Only used in pool play)
Liverpool (Only used in pool play)
Because Troy is a hero and stuck to Dortmund, I commend him. However, Arsenal, Tottenham, Manchester City and AC Milan are definitely the power clubs in 4.5 star competitions.
With the next transfers update, probably around July after the June transfer window, you can bet your balls that AC Milan will be 5 stars and even Man City will get a boost. That will be in time for Sydney or at least R3, this means that Arsenal and Tottenham will boss the 4.5 star teams.
OP Players:
Messi, Ronaldo, Drogba etc. Yes there are better attacking players. Of course it's easy to remember these players because they are the ones that "SCORE AL TEH GOLZ". But they aren't the ones that win you games. The defenses that can not be equaled by ANY 4.5 star team no matter what 5 star team you use are more than enough to deal with these players.
For eg. If Ronaldo is running down the wing and gets past Abidal, if you're any good, Pique will be there to cover. Same goes for Zanetti and Lucio, Evra and Vidic, Cole and Terry. If Ronaldo gets past BOTH players, you've f***ed up. Unless of course there is a "That's FIFA" moment, a term that is relevant no matter what team you play as or against. The only way Ronaldo will single out one of the 5 star teams' outrageously fast and strong left backs is on the counter, and any half decent player or even fan of the sport will tell you that Madrid froth on the counter ,', be careful of the counter.
Offense is Pro-Active, Defence is reactive. People talk about how they attack all the time, nobody talks about how they defend. I've been watching VoD on my computer from Melbourne and most players will do the same thing; attack the player with the ball and cover with another defender. This strat is good, but players don't seem to think about how to get in that situation. Players don't know how to defend in the middle of the park, which is one of the reasons why Cripsy using Tottenham, the strongest team pushing through the middle, grilled everyone in the LB.
I don't play FIFA enough to do it consistently, but forcing the ball wide by not allowing the passes through the middle is the easiest way to defend in FIFA, just like it is RL. Players will rush in try to win the ball in the middle of the field and get punished, like you should. Same applies to out wide, if you are constantly getting pumped by a gun wide player, don't challenge with your wide defender until you are covered.
Defending properly is easier using 5 star teams for reason Muzza stated, they don't dive in, they have faster reaction times, their positioning is better.
Now to talk about OP players in 4.5 star teams.
If Tottenham play a 4-2-3-1 with Bale, Lennon, Modric and van der Vart as striker is OUTRAGEOUS, easily a 5 star attack if backed by higher rated defensive midfielders and defenders. The same can be said about Fabregas, Walcott, Arshavin and van Persie, Milan with Pato, Robinho, Pirlo and Ibrahimovic, Man City with Silva, Toure, Johnson and Tevez.
These are crazy attacking lineups, but why are they 4.5 star teams? Because the defenses are terrible when compared to 5 star teams. So basically, you have 5 star attack vs 4.5 star defense.
Gameplay:
FIFA was made to be played at 5 stars, the full extent of the game can be used. You have OPTIONS and CREATIVITY in attack as well as VERSATILITY and DEPTH in defense. The players will do what you tell them, you can use your sick strats and your players will not stuff up. That is with the exception of "That's FIFA" moments, something that 4.5 star teams are just as, if not exceedingly more famous for.
2c and shi- yo!