Hwo and Lee would probably be a good fight, only I just see Lee kicking his ass. Tier-wise Hwoarang is likely higher for competing (and beating) Jin once, which IMO Jann can never do, but still, Jann has the feats and power that can take a win against Hwoarang. Jin will be annoyed to hell with Hayabusa's speed and skill and would likely lose, not to discredit Hayabusa's strength that wields 100 lbs swords casually.
Yeah, this actually is a good fight CosmicComet.
Hayabusa and Jin is a close call.
Jann Lee has better feats than Hwoarang, but Hwoarang will give him a fight. If Jin manages to take out Hayabusa before Lee vs Hwoarang is done, the Tekken team would win.
The somewhat more likely scenario is that Hayabusa and Jin stalemate while Jann Lee's ferocious striking power eventually overcomes Hwoarang. He could then help Hayabusa take out Jin if Hayabusa hasn't already won.