Spoiler
We're identical in drivetrain stats and his armour's tougher, but I crucially have my weapon(s) to flip/shove him with. Regardless of which way up he is as well, he won't be able to get me as far up the wedge as I can with him, and I'll always have at least two wheels touching the floor at any time; I'll generally find it easier escaping/countering. I also have a potential means of KOing him by stacking him onto his side with either end of my lifter (with how little the mounts jut out and the thickness of the side armour, his wheels likely won't have enough grip to tip him back over), and despite him having two different wedge setups depending on which way he is, his corners are vulnerable on both; my forks are also small enough to go between the gaps in his fork side and should be able to get under the flat side in most cases.
In any case, be the aggressor throughout; taking advantage of my weapons to control the flow of the match and generally keeping him forced on the backfoot throughout. Move out quickly, watch where he approaches from, and mix up mine accordingly. Either attack from the corners, feint a corner approach then dodge/counterattack the side when he turns in, and if I'm feeling daring, use my wedge to either slot the forks between his (if he's upside-down) then turn to force my way under, or press down slightly and use them to try and get under head-on. If it works, great. If not, don't panic; escape by reversing and either j-hooking/feinting it one way, then immediately swinging the other way.
Mix up my attacks/counters to keep him guessing, combo him with flips/rams, herd him into the walls/hazards, and force him into the drums; ideally wheel-first to cripple his mobility ASAP. Copy his movements to prevent him escaping when underneath (be ready to catch him if he tries monster-trucking), pursue him if he runs, actively stop him from mounting attacks, don't fire the weapons unless definitely underneath, and avoid hazards unless taking him to them myself. If can soften him up enough, stack him on his side against the wall to finish him, staying nearby in case he falls back down. Self-right immediately then escape to stop him taking advantage if flipped.
In any case, be the aggressor throughout; taking advantage of my weapons to control the flow of the match and generally keeping him forced on the backfoot throughout. Move out quickly, watch where he approaches from, and mix up mine accordingly. Either attack from the corners, feint a corner approach then dodge/counterattack the side when he turns in, and if I'm feeling daring, use my wedge to either slot the forks between his (if he's upside-down) then turn to force my way under, or press down slightly and use them to try and get under head-on. If it works, great. If not, don't panic; escape by reversing and either j-hooking/feinting it one way, then immediately swinging the other way.
Mix up my attacks/counters to keep him guessing, combo him with flips/rams, herd him into the walls/hazards, and force him into the drums; ideally wheel-first to cripple his mobility ASAP. Copy his movements to prevent him escaping when underneath (be ready to catch him if he tries monster-trucking), pursue him if he runs, actively stop him from mounting attacks, don't fire the weapons unless definitely underneath, and avoid hazards unless taking him to them myself. If can soften him up enough, stack him on his side against the wall to finish him, staying nearby in case he falls back down. Self-right immediately then escape to stop him taking advantage if flipped.