Well according to hockey db, Perez now shrunk to 5'9 167 lbs. In sohrt, I wouldn't pay much heed to these reports.
There was an interesting quote in the Florida paper by defenseman Kristian Kudroc some time ago when he was asked about his huge 6'7 255 lbs "monster" frame. He said that it was false info and that he was actually 6'5 235(?) lbs but they listed him much larger because, as he claims, opposition players usually tend to look at that kind of information and its all supposed to be intimidation... so like Leachmeister2000 said, you all shouldn't look into it too much.