If HTC has modeled the plane as it was in real life, burning the wing fuel first shouldn't make a big difference in roll rate. The C.202 and C.205 had wing tanks in the central part of wing root, really near the fuselage, so they didn't affect much roll rate. The main tank where just in front of the cockpit, under the machine guns complex, basically aligned with the wing, while the auxiliary tank was behind the cockpit, hence behind the center of gravity. So, maybe burning before the auxiliary tank may affect stability along the pitch axis.
Of course, this argument is effective only if this planes were modeled in the game according to their real life equivalent.