No way. Blazing Volcano routinely shreds all decks if you know how to use it. It’s the only deck w/ mccargo and guzma. Which essentially means at any time I can blow up an opponent’s plan. Whether it killing Nidorina/Nidoqueen or switching out the Rapidash agility effect, it’s unbeatable. I have about a 75% win percentage because I control what card comes next, plus Blaziken put an extra energy on with its ability. Couple with two kukui and two rescue stretchers (4 entei or 3 Heracross vs water decks) and a malasada. The strategy is limitless.
I am quite fond of Blazing Volcano, but when it comes to
grinding on the PTCGO, Relentless Flame is (or at least, was) better. I just checked: with Blazing Volcano I am currently at 130 wins out of 195 games, which means I've won two out of every three games I've played with it (66.7%, rounding up).
The thing is, I don't have my win record pre-Team Up, but what I believe happened is I began losing more often with Blazing Volcano, because of the Relentless Flame matchup. For the record, facing off against Torrential Cannon wasn't that bad.
Blazing Volcano has
one Guzma and
one Magcargo. They are incredibly valuable to the deck, but the more you play the more you should encounter games where
they just don't show up, or at least not at the right time. Which is an issue versus Relentless Flame because of its nature; just as Blazing Volcano can sometimes mount a good offense via Houndoom or even Blaziken itself, Relentless Flame can punish you with Rapidash or Nidoqueen, not just Charizard.
The difference is newer decks seem to be good at keeping their hand sizes up, especially if they see Houndoom coming. For better or worse, Rapidash is about coin flips. XP
I'd be happy is I could honestly say Blazing Volcano was the best, or still is the best, but I can't. For the record, I'm actually pretty poor with Relentless Flame myself; it is
facing it that I've had to admit how good a deck it is!