If you don’t like test dummy stuff you’re maybe watching the wrong channel…. He’s not comparing with 105 because a 105 cassette is 272g for a 11-28 and isn’t monoblock construction. The 105 will almost certainly last longer as it’s steel, and it may shift better too - but if you’re looking to save weight without paying full whack for top end Shimano SRAM, Campag etc then this sort of thing is an interesting option. Even broader point is be grateful for test dummies because when the competition to the major brands gets better, we all benefit through price reductions and performance gains.

Who the hell uses a cassette that seems cheap at first but doesn't guarantee the switching quality, durability or safety? This requires a long-term test and not assembly on an old 105 groupset like he does and then drives around the block. If I have a $3000 drivetrain then I won't use cheap Chinese chains or cassettes.