Not answering for gbrittain, but I doubt from his post, he has "anything" against him, which seems like he made it abundantly clear.
It seems like you think he has something against him much like you think anyone who thinks Henson has more potential then Romo has something against him. Now I am not saying some don't think Romo wont amount to anything, but not all do.
Personally, Romo will be exposed when he gets to start full time, IMO. Why? Because of his limitations, arm strength, height and his penchant to make sometimes dumb mistakes ( like I pointed out for example last year in Pre-season against seattle, his throwing up for grabs when blitzed and not mentioned there should have been 2-3 ints that were dropped that hit the defenders right on their hands counting all the pre-season games last year).
Its like Timmy Chang was exposed last week. He was great the previous two weeks coming in relief for Henson, throwing few TDs etc, but once he was full time starter, he started to look clueless. I am not saying Timmy Chang and Tony Romo are comparable at all. But I am saying, Timmy's short comings were exposed when he started full time and D could game plan for him. Its the same thing the great Troy "I am better than Emmit" Hambrick went through.
Anyway, I have nothing against Romo, and would love him to be Starting QB for Cowboys for long term, if my doubts about him are proven wrong. Until then, I believe, Henson is the more talented one, as he proved in his first year, when he had the no. 2 job, from the year 2 man Tony Romo. Year 3 Romo won the job from Henson, but it didn't seem like whole lot distance between him and Henson, as we thought or media thought, from Jerry's comments etc. But thats besides the point, Romo won the job.
Bottom line, I hope both prove to be starting Quality QBs and better one sticks with QB and other gets cowboys something in return via draft picks.