2 guys who aren't submission experts having a submission match sounds bad if you ask me.How about Ultimate Submission? I think Sheamus and Bryan had a good match 2 years ago at Extreme Rules, this could possibly be quite good. Rusev could still look really strong if he makes Cena tap out once.
It would be different if Rusev specialized in this, but he doesn't. Like Cena, he has one move that's a strong submission. Otherwise, he doesn't really ever use them.
Bryan and Sheamus could have a submission fight because Bryan could carry Sheamus in this battle as Bryan is a submission wrestler.