The wings on the side of the G2 frame are for appearance sake: to make it look like an Encore. TC will never say it was to make them stronger.
Then why were the wings put on the Encore?
Back to the original question, JD developed & hunted in the round long before the G2 as previously stated.
That being said, I have no doubt that the G2 is stronger & offer some margin of safety, but it would be
VERY stupid for TC to say that, realizing some would just push Contender loads to higher pressures, & some folks have both Cont. & G2 frames & may put a G-2 developed load in the tube while on a Cont. frame, hmmm. Some things are better left unsaid by a manufacturer. And as stated, being able to de-cock & re-cock is a good thing.