Well, that's an intriguing question.
I would say that you're looking at comparable sets; the edge goes to the Morel on the basis of the Acuflex-treated silk dome tweeters.
It's difficult to find a tweeter in this price range, in a component set that is uncolored and crisp (not brittle or fatiguing) asd the Accufles treated silk dome tweeters from Morel.
That said, other differences that can influence that are based on where you're installing them.
The Morel has a 1 inch dome tweeter, the JL is .75".
This affects dispersion a bit.
Given that the Morel has an angled mount, it allows you to install in the factory locations and aim them closer to you, on axis, edge, to Morel.
The JL has a narrower dome, which will disperse a wider pattern, less of an issue if flush mounting on or behind the factory locations.
Factory sail panel locations, flush or hidden, slight edge to the JL, not because it has a better sound, but the difference in on and off-axis response may negate some of the benefit offered by the Morel.
If within plus or minus, say, 10 degrees off axis, I'd stay with the Morel.
Not knowing which amp you intend to get also changes things.
Getting a 6-channel, bridging four to give you increased output to the midbass and plenty to the tweeters, without using the crossovers in the passive arrangement you're considering, changes things, as you may be able to get slightly better midbass and equally good tweeters.
Even a higher-ish powered 4-channel that can cross the drivers electronically, same results, better sound.
Do you know what amplifier you are considering?
Does it have high-level inputs that you'll be using from the factory head unit?