Just by appearances, there should be a delay to Jecht swinging the blade, but there isn't; it meets Inigo's swing and attempts to push through it to knock him back, the man himself laughing.

'Twerp thinks he's a big man! How about you both--'

There's a clang, as a risen armguard meets the sword Tidus attempted to slash into at the side while Jecht was 'distracted'.

'--make me!'

And with a yell, there's a ring of energy that shoots outward as Jecht moves his limbs, pushing them back. A moment to unsteady them, but they'll be able to recover - in time for Inigo to see that Jecht's darting towards him, to come in with a jump and slash down on him.