Combat weapon question

[FluFF]

Hi, I haven't played combat since Dragon Soul and lately I've noticed that there are people running either a 2.6 main hand and 1.80 dagger offhand or people with two 2.6 weapons.

Is this because they removed 1.4 daggers after Cata and changed something to combat ( I remember it having something so you needed a fast offhand dagger )

since they both had good gear and were in good guilds, I assume the 2.6/1.8 and 2.6/2.6 method is both fine to run nowadays ?

[Deleted]

IIRC, combat potency was normalized so the energy gained from it is independent of OH weapon speed these days.
With 2.6/2.6 you do more damage with Killing Spree, with 2.6/1.8 you get more poison procs, all things being equal 2.6/2.6 comes out slightly ahead, but the difference is so small that ilvl matter more than weapon speed.

[Artorius]

It's hard to answer, depends on the rest of the gear. But, normally ilvl matters more than speed for off hands, while the main hand needs to be a slow weapon.
I'd tell you to Sim it to be sure, since sometimes going from a slow heroic offhand to a heroic WF dagger is not a DPS gain, and sometimes it is...

[Zale]

Ilvl is the most important factor. After that, 2 x 2.6 speed weapons is a slight increase due to Killing Spree. But generally speaking, Ilvl wins.

[shadowboy]

2x2.6 is only a signficant gain if you have the t16 4-set (since it significantly boosts killing spree damage). If you don't have the 4-set, 1.8 is slightly ahead (depending on the dagger vs slow in question). But it's very close and ilevel is king. This is especially true without the 4-set--that 4-set is why the hwf dagger was behind the h slow weapon.