Can you explain a little of the differences between Strikeforce and say DW7?
Yeah, DW6/Strikeforce attack chains use one button to make a combo, and there are 2 combo strings. So if the buttons were square and triangle you could go:
S1 S2...S5 S6 T1 T2...T5 T6 etc. and you can switch from SX->T1 at any time and vice versa. It's really simplistic. Koei was trying something new but it didn't work very well.
in DW7 and most other musou games, you have 2 attack buttons as well, but they work differently. Instead of a weak and strong attack string, you have normal attack, and charge attack. Charge attacks (triangle) do something different depending on how many normal attacks precede them. Usually you hear this referred to as "charge x" where X is the xth attack in the chain.
example 4 normal attacks followed by a charge attack would be charge 5.
Each charge attack has a different purpose, some are crowd clearing, some have a lot of forward momentum, some are good for damaging bosses. But the higher up the chain the more normal attacks you need to land uninterrupted before you can do it, so it's a risk/reward thing too.
There are other ancillary systems on top of this (DW7 has weapon switching, and certain attack strings have special animations for specific characters, orochi games have character switching, samurai warriors games have character specific special attacks) but that's the basic attack flow.
Hopefully that makes sense.
edit:
The structure of dw 7 and strikeforce are also completely different, i'm just talking about the low level combat mechanics, not the encapsulating systems.