I thought this as well, slight spoilers for the EU and one line about a crazy fan theory that would be awesome if true.
The only real difference between Ben/Jacen is we got to see Jacen go from good to evil similar to Anakin (only with actually good reasons and storytelling) and we also see 100% that he is one of, if not the most powerful Force conduit ever with what he does in the Yuuzhong Vong War.
I think what we've seen of Kylo Ren so far is insane. He stops a blaster mid air for an extended period of time with no stress on his body while doing it. He takes Chewie's clearly showed off multiple times to prove its OP bowcaster to the stomach and doesn't even get knocked back, and then kicks one of the best stormtrooper's in his army's ass followed by one of the more powerful good force user's in the universe as well up until he literally tells her how to beat him.
And all of this is before we find out he never even finished training. I wouldn't be shocked one bit if he comes back as strong as Anakin would've been if he hadn't lost 80% of his body. Especially if the crazy fan theories are truly and Snoke is actually Plagueis, which I think would be pretty awesome in it's own right.