Abomination was strong enough to toss vehicles around like toys and manhandle the Hulk throughout the majority of their fight (including kicking him through a building). The same Hulk who utterly wrecked the army and ripped apart their vehicles when he encountered them. He was also fast enough to catch a missile shot at his back, and then proceeded to smash it against himself, just to show how little effect it actually had. So he is more than just a fast sprinter. He also had Ross' helicopter crash on top of him without any injury.
New Thing simply has too little in the way of feats to suggest he can do anything to take out Abomination. His best strength feat (which is probably the tank one) isn't anything Abomination himself shouldn't be able to duplicate, based on his own feats. And Abomination has way better actual durability feats, and is also faster/has better reaction times than Ben, based on feats. Not to mention Ben spent a year with the military, where as Blonsky was a soldier for a much longer time, so is much more experienced. Ultimately, it comes down to the shittiness of the FF film and the glaring lack of action onscreen. It's extremely hard to tell just where the new Thing measures up because, like the rest of the team, he really doesn't do that much.