Is coming out as a Christian a big deal? Nah man, quit screwing around, coming out as a homosexual can literally destroy your life in some circles. It isn't an easy thing to do, and must not be an easy thing for a professional athlete to do either, evidenced by the number of people who have actually done it.
That people give Tebow crap for being Christian is a totally separate issue and does not belong in this discussion at all. People might actually agree with you on that point if you didn't drag it into this discussion, because you should be allowed to be whatever religion you want and nobody should make a big deal out of it if you're not making a deal out of it yourself.
Now, coming out as a homosexual IS a big deal, for whatever reason, in this guy's line of employment. If you were homosexual, would you come out to your friends? Probably not - imagine how much crap you'd get from everyone. I'm just guessing, but it's probably a good guess. Maybe things have changed a bit and maybe it's easier to do now, but it definitely is a LOT more crappy than coming out as a Christian.. because really.. Who is secretly Christian in America? It's got to be a small number. Compare that to the number of people who are afraid of telling others that they are homosexual.
Surely you are not making this comparison sober. MobBoss, put down that shotglass!