What do people think are my chances of being able to trade two Ascended Heroes PC ETBs for the Phantasmal Flames Zard SIR?

Apologies if this violates of the boards rules - I’m not entirely sure on them around this topic.

I managed to get lucky with the AH drop and got the two ETBs. However, after maybe 70 packs of PF I had no luck pulling it. As, in my opinion, one of the greatest cards of the modern era, it‘s absolutely my main chase.

Do people think this would be a fair trade?

I’m looking for an ungraded copy of the card. I kinda feel that although the market on the two ETBs might be slightly less than the card value right now, in time they would appreciate much higher than the Charizard. But I’m not sure. What do you guys think?