20% does increase the chance of rolling 6S and 6L but its a pretty small increase. It does indeed work though. I've went from a 4S0L to a 4S4L in ome fusing just by 20%ing it. As for 6L, the increase is probably low on top of the low chance of getting it. It ultimately is all RNG. --- http://i.imgur.com/VgwJRED.jpg http://us.battle.net/d3/en/profile/VanillaRice-1752/hero/337193
In my experience Q20 is a fast way to get 1s out of a Jeweller's Orb. I've tried it six or seven times and every time it's been one socket. Comparing that to getting 6 sockets in under 20 orbs on a Q20 weapon and I don't really like the cost or the odds involved.
On the other hand I had a 6S2L2L weapon at Q20 the other night that I'd completely forgotten was Q20 when I dropped a fusing orb on it and got 4L out of it. I'm banking more on coincidence or that I could've maxed it at 5L if it hadn't been Q20, but my experience with jeweller's orbs and quality might have prejudiced me. --- Stop complaining. I could have done this more painfully. - Dryad from Sacred 2.