Lola has one power less than Roger, and your right Roger is the more offensive card.
Depends on your playstyle though really.
Lola has two purposes, Roger really has one most of the time.
Lola can attack and defend with 6 gap or 3 gap, Roger mainly aims to force out pillz and attack with a 6 gap most of the time.
Lola Nabrissa Lucy Melanie or that same hand with Roger? That's for you to decide mainly.
If your getting matches where you're not using Lola for offence and you're losing because of that one round, switch to Roger.
When your using Roger if you feel the need to have a Dual purpose card for bluffs, switch back to Lola.
I can't make the decision for you, it's what works best for you. Elo's meant to be full of Ghiest + NM and other clans, Roger handles them better against these clans but against the others it depends on the hand.