I'm FAR from a flow expert, but I fail to see how the step on the chamber side of that intake valve could in any way impede flow. Since the intake flow is coming from the other side, that step has no bearing on flow, IMO. So I'm not sure I would include the step in my decision process. Maybe
@MOPAROFFICIAL will chime in. He's forgotten more about cylinder head flow than a lot of people will ever know.