welcome to the forums.
as far as the M1A2 bit goes, we have at the moment had to leave the M1A2 and the T-90 around the same power to keep things blanced. Yes it may be unrealistic but its what EA left for us to work with, and if we where to make them realistic powers etc the USMC would just crash MEC on every battle where armour was envloved

It takes long enouth to make one tank for a team, with a tank probaly being one of the most complicated things to model and import and at the mo we are still working on getting our C2 fully ingame, you can see some nice renders of it on the news page
As for jets, I wouldn't really bother with them yet, maybe play around with the A-10 on basrah etc but at the mo, we have hardly done any work atall on making thme realistic etc. In v0.6 we have started are work on making them a little more realistic, but dont exspect that to be complete untill v0.7 or maybe .8 is out.
1 bit of advice thou, you are probaly still use to the "arcadey" style gameplay of vBF2, it takes some getting use too PR as there is a very big learning curve. When I first played PR back in 0.2, I hated it at first, then i gave it anouther try and loved it as soon as I started playing as a team, with my squad etc.
Try and join a good squad, read the player guide (link under the banner) which you really need to read, loads of things have changed like rally points, limmited kits, all that stuff that you will need to find out about so do read it.
anyways hope you have fun, and enjoy the mod!
