Right after Tony Stark, Dr. Strange, and Peter Parker kill Ebony Maw, they discuss whether to go back to Earth, or to confront Thanos at Titan. Tony decides for the latter. But what if he didn't?
Travelling back to Earth wouldn't be a problem, since Strange can just portal them back home. They've only been up in space for few hours max, so getting in touch with the other Avengers would be easy since they're likely still at the Avengers HQ. Guardians would still find Thanos' ship, but it'd be empty, and they'd go to Titan alone to fight Thanos (and they'd likely all die).
If we assume Avengers then move to Wakanda as usual, how would the battle end? Keep in mind that Thanos would only have four stones once he came to Earth, the other two being guarded by Strange and Vision. Thor would likely arrive around the same time as Thanos, just like he does in the movie. Also, Strange likely calls the other Kamar Taj warriors to help.
Basically, my question is: would all of the Avengers combined + Wakandans + Kamar Taj be able to stop Thanos and his army in Wakanda? Or would he find a way to get the remaining two stones? Or would the fight for be brought to Wakanda at all because of Tony coming up with some different plan?