Tibet: a stonger Mongolia?

Before Tibet renounced violence and became a pacifist Buddhist state, they were just as formidable as mongols. They were bent on raiding and destoying china, india, and the Arab world.

If a POD were to elimate Buddhism from taking root in Tibet, could we see a Tibetan Empire stretching from Hungary to Java? Anyone have ideas?
 
First to survive the mongols
get a strong state not like the persian empire 200000 non armed soldiers
create a safe border against steppe people
Make allies with the same targets
Adapt chinese arabian and Indonesian culture and weapons to unify
 
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