the short answer is probably a very negligible power difference.
the longer answer is more of where is that +2 coming from. most [split pattern] cams are ground on different angles for the intake and exhaust and the LSA is expressed as the average between them, so a "108" could be a 106 intake and 110 exhaust. now if you expand that into a 110, then theoretically you could have a a 108 intake and a 112 exhaust, or a 106/114, etc etc.
that's why it's important to look at *all* the cam specs.