yeah, you're right. Picture a hang glider where the guy stands on top
of the wing instead of hanging below it. You're pushing down on the wing
instead of pulling it. Same as pushing a wheel barrow vs. pulling it. Much
easier to pull it.
Also I've found that keeping the motor, RX & lipo as close to the CG as
possible makes the plane more stable.
Having the motors at one far end and the RX & lipo at the other far end
causes a teeter totter effect which increases porpoising.