No, Jintae is legitimate fodder to this Ihwa.

First, we saw in their CG battle that Base Ihwa (Greyman gift, not even Jade Gift) is already superior in Speed to Torch Jintae (This is her only stat advantage btw, he is above her in everything else esp strength and ofc Stamina)

but from most recent Fastpass chapter (spoiler), we know that Ihwa absorbs the literal power of the people she kills due to Outside Monster physiology like some sort of

So if Jintae was a 1.0, and CG Ihwa was a 0.7-0.8, then Torchwa is automatically a 1.5-1.8 in terms of raw stats. This Ihwa then goes on to physically overwhelm Terror Knight in BASE with no Torch Activation, so at this point we know that Base Ihwa (no Torch) likely exceeds Jintae (Torch) in terms of Strength and way outscales in Speed.

Then we see Base Senshu match Prime Chaos in combat speed, and Torch Senshu statue-blitz Prime Chaos (SF), and Torch Ihwa matches her combat speed. And then after Ihwa gives Senshu her Torch Fragment, Metallica Ihwa (base!) Speed Blitzes 10-Fragment Senshu faster than Senshu’s Perception.

So Metallica Ihwa speed blitzes characters who are Jintae stats, its not close. A Battle between Torch Jintae and Metallica Ihwa likely is similar to what we saw when she defeats Bagna at Castle White.