Well, for what it’s worth my old PowerStart also had a Dual 540 design, which I never had a problem with... At least for the .12 engine on my Impulse. I would imagine that the larger motor can easily meet or exceed the potential of those two - at the end of the day, as long as they can get the job done and it’s well built, I don’t mind.

Now, if the box has just a single 540, I’d probably worry - lol.