Me-262 vs Lockheed L-133 and P-80
Lockheed began designing its L-133 Starjet back in 1939.
Oddly, the early L-133 was more advanced than Lockheed's later P-80 Shooting Star which flew in 1944.
The L-133's airframe was never built. Its engine was, but it wasn't a success.
The design had canards. Wings, fuselage, and engines were blended.
Design speed was 600 MPH. But to reach this speed requires
keeping the wings outside sonic shock-waves, either with swept wings or a long nose.
The L-133 and Lockheed's later F-104 Starfighter have a long nose which allows straight wings.
Possibly Lockheed engineers first discovered or anticipated this, but kept it a secret (?).
Or the wings were at the rear simply because it was a canard design (?).
Was the nose long rather to provide space for fuel (?).
The Me-262 had different advanced features: swept wing and leading-edge slats.
It had drag/weight/maneuverability disadvantages with engines slung under its wings.
Its tail-plane had elevators, but the whole thing could be rotated (all-moving tail).
All-moving tails solve lack of control at transonic speeds, which the US didn't solve
until years later in the F-86 Sabre (a British engineer predicted and solved this prior).
The P-80 was a conventional straight-wing (and rather ugly) design with a jet engine shoved in.
Lockheed can't be blamed. It was what the USAF ordered, a conservative design, not a risky advanced one.
Two preproduction YP-80s were deployed very late in WWII but no action occurred.
After WWII, the US conducted simulated dogfights with the Me-262 vs P-80,
and concluded they were evenly matched, as their advantages/disadvantages cancelled out
As for Me-262 vs L-133, the L-133 might not have been a viable design (?). Its inlet looks too small.