Not necessarily saying this will help your team over your current sets, but whenever I ran DW, the first and best Blaziken set I ever used was:
Blaziken @ Focus Sash
Also, my favorite Genesect set:
Genesect @ Life Orb
This kinda reverses your roles for the two; BLaziken becomes the Sash user while Genesect is more of the direct sweeper. I actually normally lead with Blaziken. At +2, Stone Edge easily 2HKO's Dnite and Lati@s, two of Blaziken's usual switch-ins. Only ones that still beat it was Slowbro and Jellicent. Meanwhile, if Genesect gets the +1 Special Attack AND the RP off, it tears through teams like no other (except maybe Blaziken ;D).
The highest I've ever gotten in BW, due completely to my lack of tryhard-edness (and the fact that school started back up 2 days after I started PO), was only a meer 12th on the DW ladder back in late 2010 (I actually tried back in 4th Gen on Shoddy, and got to #1 OU for quite a while, then moved on to Ubers after getting bored with OU's easiness, and reached #12 there in 2 hours. I then went to UU and got #4 in about 40 minutes. Ever since then I haven't cared too much for Laddering). But anyways, that 12th spot I reached in 2010 was with BLaziken, Thunderus/Serperior, Hippowdon, Terrakion, Genesect, Excadrill. Those were the two sets I ran for my Blaziken and Genesect, and were heands down the best ones I ever tried. You can try them if you want, but since I haven't played DW since mid-2011, I dont know how the metagame is relative to those sets. I just thought I might mention them, since they were THE 2 best pokes I had used in DW.
And, just a side note: No one used Terrakion on PO then. I'm claiming 1st user right now. Just like how I was 1st with using Lum berries on sweepers (Lucario and Mence)back in early 4th Gen. xD