Ah, Gazala, fun times

. But seriously, I have no idea, although I've always wondered why this scenario is set to start on June the 6th of 1944... The ahistorical scenario branch is fun though, but just as realistic as invading the USA. But still, to come up with some vague explanation, just because I'm bored and waiting to pick up my car (I just got a call it will take a few more hours), STORY TIME!
I'm guessing the focus of the Allied shifted after the German push into the ME. The MTO/ME was never more than a secondary theater for Germany and the Allied, and 'Europe first' was still in effect. SEA/CBI (Burma theatre) was also of secondary importance compared to the PTO, so perhaps the advance of the Axis into the ME made the Allies shift their focus and decided that this essentially second/third-rate theater became the primary one. For the Germans to get that far, the Soviet Union must have been weakened enormously (see Persia, and did you play Caucasus? Now that is fun

).
In this situation, there's no chance of any European invasion, the USA decides to increase PTO activity instead, and the UK focuses on stabilizing the ME/CBI/SEA, logically by reinforcing India Command (?) and making them the foremost UK force. So that would mean that instead of Hurricanes and a few Lee/Grant tanks (still in use there in 1945!) all the efforts would be directed there. The Japanese wouldn't have had a stronger presence there locally, as the Burma theater was mostly an IJA (army) affair and their needs were always a distant second to the IJN (navy), which was busy being paranoid and preparing for the big decisive sea battle that never came. I've always wondered if these services were actually on the same team sometimes...
So... This would make the UK/USA war effort in the SEA/CBI and PTO much stronger, so the Japanese could have been driven out very swiftly? Handwaving around such trivialities as logistics/politics of course...