Although I generally agree that theres no point in complaining about the luck aspect of the game because that basically is what the game is based around, there is a lot in @Mori-Mori 's post that is just wrong.
Pile On is absolutely a very luck-centric ability. The 'skill' involved is limited to a usually fairly simple calculation of risk (how much do you lose by putting your guy prone in this scenario) vs reward (how likely you are to remove the opponent and how important it would be to remove him). Sometimes that calculation is a little more nuanced and complex than others, but overall there really isnt a lot of skill involved.
On the other hand, the luck aspect of it is basically just how well your armour roll turns out, and armour rolls are probably one of the most frustrating areas of the game in terms of getting screwed by luck. I say this as someone who loves BB in all its frustration and randomness, but seriously, if someone is just getting lucky with their armour rolls, and even their blocking dice rolls that allow them to get to the armour roll stage, that is probably the most common thing that leads to those hopeless "nothing you can do about it" kind of games. So just spamming PO and hoping you roll good with armour involves a pretty simple skill calculation and then its just all luck in terms of how well it works out for you.
Think about a game where each team has one clawpomb killer, and they are both playing smart and keeping their killer safe where possible, but eventaully one of them is left open, and the other killer hits him, and gets the pow and piles on, and fails to break armour. Now on the next turn, that opponent gets up and clawpombs some other important piece and injures him, and then fouls and injures the other killer piece too. This kind of scenario is all too common, and more often than not, the game is basically decided right then and there in the span of those two turns. Both coaches played it right, and one just got lucky in the right moment.
Its also totally incorrect to state that the TV mismatches on champ ladder only matter for the first 5-7 matches. Actually in my experience they get worse when my team gets to mid-TV level, because at low TV, theres a lot of other low TV teams to get matched against. There are fewer teams as you get to mid and high TV, so more likely you end up with a TV mismatch. Also, depending on the race your playing, it can often be much worse to be playing as a 1250 TV vs 1600, rather than a 1000 TV playing a 1350. If it was chaos vs chaos for example (and lets be honest, it often is in champ ladder), the first example probably means you have a few guys with block, and are facing clawmb and maybe even clawpomb. The second example means you are a fresh team facing a few block, maybe a MB or two. Much better off in that scenario IMO.
Im not in favour of trying to remove all luck from BB (which wouldnt even be BB anymore, and im not sure if thats what @Hotdogchef is advocating for or not), but I also think its dumb to just ignore the very real problems that this game has, because if its gonna grow in popularity, or even sustain the popularity it has now, some of those problems can and should be addressed.