It would but it's not really something to fret over. The engines these days are tougher than that.

The APC also uses the blade shape to center the area in closer to the center area of the blade. I also seem to recall that the APC design uses washout towards the smaller tips to help control tip loading and vortex formation. By washout I mean the blade is twisted along the span more at the tip than the pitch angle calls for. You'd need a pitch angle measuring guage to tell for sure though.

But this is where APC made their reputation for being a good prop. Their design lets the same size prop spin up a few more revs and that pulls the model along faster....... all else being equal and if there's not some other oddball factor that confuses the issue.

Sometimes a heavier prop can also help stabilize the idle. I tried wood props on one of my 4strokes and the idle would not go as low without backfireing and kicking the prop off. You may find the same thing with the Jett. The hot performance port timing may make the idle a little unstable and the heavier prob may smooth that out.

You'll know more when you can mount the engine for a breakin and prop test session or two.