There's still a big difference between 46 and 55. Sting could have one last match, but I'm sure that his condition right now is probably a lot better than when he had his last match with EC3 since he's signed with the WWE for a while now and he still hasn't done anything other than the WWE 2K15 thing. WWE probably made Sting work on his physique and all that, for an upcoming match. I'm just not that pumped to see a 55-year old in the ring, it doesn't matter what his legacy is. He should just retire, honestly.Bernard Hopkins is 50 and one of the top P4P fighters in boxing.
50 =/= 90
Kane is 46
Angle is 44
Jericho, HHH, Christopher Daniels are in their 40s and can still put on great matches.
Sting isn't a world beater at this point, but he can still provide WWE with something, even in the ring, so long as he works on his physique a bit and loses the t shirt.