Cool that you are doing lots of little tests. I like that you are also trying to not get to crazy witrh the details but it’s also good to try to fix little issues here and there. I know in Animation Mentor we go through this every week as well, the balance of overdoing and doing right. It’s a little dance all animators have to go through 
The few things that jump out at me are that his balance is off and the overlap of parts of his body is not enough. We are doing lots of weight stuff in Animation Mentor right now so my thoughts are based off of our lectures and the back and forth we are all going through on our forums there.
Even though he is a superhero some physics should still apply. He too effortlesly picks up the table. It looks odd because a few frames later he seems to have to have some effort to then throw it. He immediately picks the table up rights after his left foot is on the ground. I would suggest arcing his back ( a reverse “C” shape) before he starts his lift to show what he is about to do. Then when he lifts the table he should be arched backward (this would be in a “C” shape from the side, opposite of the previous one). Make sure the back starts moving before the table. If you want to keep the poses you have you could make it look more realistic by having the rotation of the body and the table overlap a bit so the body moves first then the table. they move at the same time now which makes it look too weightless.
I like the throw, it is pretty solid. Would look in offsetting the throw just a bit with the back starting to rotate first to show him winding up plus that anticipation helps sell the throw. I realllllly like how he extends after the throw a bit. Great force there. And man I so love the design of the character. Very funny!
Sorry to have written a book for what is basically two really small fixes. They really keep on us to analyze everything in Animation Mentor. Hopefully that is cool. We are all so used to that but I’m always worried I will offend people if they aren’t used to tossin ideas back and forth.
Keep up the great work Mike, i love your stuff!