Comparing apples and oranges? Zenonia is an action adventure RPG. Rise of Lost Empires is RTS. I'd still go with Zenonia though. More gameplay.
You're right...two different games. Honestly though, having played Rise of Lost Empires, the RTS elements are so minimal. They can call themselves an RTS, but that doesn't make them an RTS.
Zenonia has 40+ hours of gameplay and more if you play more than once as good or evil So ya... Zenonia FTW Edit: 200 posts woot
I'll probably be the only person to say this, but... I really didnt care for Zenonia, and while Rise of Lost Empires is far from being a perfect game, I still liked it better.