EM5 vs. EPL5

Aloha folks,

I've been shooting and epl1 (primarily underwater) for a while now and while I've been happy with the results it seems that now would be a good time to upgrade. The sensor being used in both these bodies seem more than capable and definitely worth the upgrade costs.

My question here is, aside from the viewfinder, what are the advantages of the em5? Keep in mind that not only would I be replacing the body but the underwater housing and (in the case of the em5) the port for my lens of choice (oly m.zuiko 9-18). It seems to me that the epl5 is just as capable with much less cost.

Thoughts?