The "new player" he's talking about is the BPP....not you or Bateman.
Oh c'mon now, it was just about to get fun!

I recently did two failed wave 10 Platinum Collector solo attempts with Hurricane/Tsol and that set-up is awesome (mainly my own scrubby ness that messed it up), have recently also done a couple of Tsol/BPP platinum pugs, and at least for me the BPP was nowhere near the Hurricane. Armor is one thing yes, but taking out the Atlas shields is the real trick, the BPP really struggle with that on Platinum, comes down to preferences and play style, but I would chose the Hurricane 10 times out of 10 
I see. I guess that with the shield recharge time bosses have on platinum, the lower shield dps the BPP has might be an issue, at least during a solo.
Me, I'd choose the Hurricane too, but simply cause there's nothing the BPP actually does better than it. Not to mention that it is still useful when you're locked out of MM, lol.
Generally speaking, I was just trying to say that the Tsol might be a bad example to showcase that gun's weakness. All its major shortcomings are negated by MM, and it gets at least on about the same level of a hurricane, even though it's harder to use I guess.
The real problem with the gun is that it's pretty much worthless without MM, and even with MM it's no better than the hurricane.
I mean, a gun can be a good gun either because it's good all around (say, the harrier), or because it needs something to shine, but when you provide that something it trumps anything else.
Pick the Raider, for example. You either need a huge accuracy boost, or you need to be always very close to the enemy (read: charge) to get the best out of it. But once you provide either of those, it gets better than pretty much any other gun. So it makes sense to use it in these situations.
The BPP sucks without MM. But even with MM, it's definitely no better than the hurricane. That, to me, is what makes it fail in an optimization perspective.