First off, it was a good movie. A lot of people just couldn't stand to see Arnold as an every day guy. I think it was a good turn for him. It is a perfect warm up for T3, True Lies 2 and King Conan.
As for his size, 200lbs is a joke. He looks to be in his late 30s, early 40s in his face, and most guys half his age would die to have his body. If you look at the scene in the shower, you can tell he still has those massive pecs, and then you see his thigh for a moment on the operating table, and they are still good sized. His arms look HUGE still, if you look at the scene with the wife beater, well, damn, thats all I have to say. He must weigh in at 220-230 at least. Sure it looks like his body fat is a little higher, but you can tell it's all still there.
Keep in mind the guy is 55 years old. He has NOTHING left to prove with his body. People talk shit on him all the time these days. The truth is, he has accomplished more than any of us ever will. He has nothing to prove with his body anymore. He has won all there was to win in bodybuilding, broke and set records, and made countless action flicks showcasing his body and stength. In recent years in movies like Twins, Collateral Damage, etc he has proven he can act. He has nothing to prove to anyone. He has done it all, and lives a great life. It's funny how some people can sit on a pc and talk shit.
ps. Looking at Arnold in Collateral Damage, I thought how funny it was that he is just as big, if not bigger than Vin Diesel, hollywoods current 'muscle man'.