is an MBA from Insead the best pathway to be accepted to mckinsey dubai as a senior consultant?

No it isn't: there is no single best path, and approaching the problem like this makes me think you have your priorities wrong... or aren't seeing the big picture

Hi,

Pls determine what means best? How can you compare the ways of getting there if the result is equal (Offer)?

It is one of many pathways. It is costly if you are doing MBA just to get into McKinsey. But at the end of the day, it's very subjective and depends on your personal circumstances

Best!