Something to consider:
Even though the NQ Death Scythe will do 15 weaponskills in the time it takes the Death+1 to do 14, here is something to look at. If you take each weapon's total time to reach 100TP (NQ death = 61.60, and Death+1 = 66.32) and multiply them by the respective number of weaponskills at lap, (14 for Death+1, and 15 for NQ death), it will give you the total number of seconds it takes each to reach the 14th and 15th weaponskill. Then divide each of those numbers by their respective swing times (NQ Death = 8.8, and Death+1 = 8.29) and you will find the total number of swings to get there. It looks like this,
14 x 66.32 = 928.48 928.48 / 8.29 = 112 total swings
15 x 61.60 = 924 924 / 8.8 = 105 total swings
now find the difference between 112 swings of the death+1 and the 105 swings of the NQ death scythe to find out how many more swings the death+1 gets in comparison to the NQ death scythe.
112 - 105 = 7 swings.
Conclusion: NQ Death Scythe (or any 528 delay scythe for that matter) gets 1 bonus weaponskill in comparison to the Death+1 (or any 513 delay weapon) But the Death+1 scores 7 additional hits...
So would 7 hits from the Death+1 total up to, or beat 1 NQ Death Scythe weaponskill at 100TP? You be the judge!