well if you are talking about power as that term is used in physics then yes torque is a factor: Power = Torque x Angular Speed
The bottom line is, we are talking strength, pure and simple. And as with everything else that's an attribute, it's context dependent.
To give you an example, you may be the strongest in your family even though you weight 145 lbs soaking wet (apologies if you really do

) and I'm sure your frail, 90 lb mom calls you strong and even thinks that. And she'd be right cause in her frame of reference, you can do some pretty amazing things that she can't do - like open a new jar of peanut butter or lift 2 grocery bags at once (hopefully you can

)
But then you go to a powerlifting meet where there's monsters like Wolfy. I don't need to tell you what the reaction would be if you claimed to be 'strong' - if the big guys are really nice as they are most of the times, they'll politely encourage you as long as you don't make a real fool of yourself.
So your gymnasts are cool cause they can do all those things which are impressive. But do most of us grown up guys think that that means they're stronger than a 300 lb NFL player who can bench over 400 lbs? Hardly