there is a map that show escort radius of P-38 (H there were not G in England) as 520 miles with 2 drop tanks from november '43 (there were not P-38 in england before) enough for Berlin. i'm sure that G can did same this are a slow speed mission with low fuel flown. there is not doubt that P-38 can go to leros at slow speed fight and back to slow speed, and after some calculation, did in the previous post, can go fast in the 100 miles neares to Leros bu if they encounter enemy fighters over Rodi also in easy combat they can go to Leros and back? the trip per se is not so long but they need to fight on Leros and fly again on enemy islands in the back trip.
Zero is not bad on paper v/s Spit V, Spit has horizontal speed advantage not so high as it is commonly believed, a dive advantage and armour near all others is in favour of Zero.