Obviously he's wearing 0 to 1 reduction items. On top of that, you're massively geared and only do 33k hits on a low redux character. At the same time assassins do 32k+ dmg with normal autoattacks on a character with way more reductions , autoattacking doesn't take money, autoattacking doesn't require spamming, at the same time sins also have more hp, more survivability.
On these low reductions our current snipers do 2x 35k dsses. While DS is ranged, easier and faster to spam and can semi-stunlock. Spiral pierce on this reduction does about 15kx5 = 75k. which is easily spammable and at the same time comas too. How do just 33k hits make up to the massive boosts other classes got ? Your damage remains lower than the other classes, your survivability remains lower than other classes, you're still 10x as easy to disable compared to the other classes while wasting shitloads of zeny.