Its unfortunate for games
Cloud, Ex-SOLDIER Cloud, Ex-SOLDIER hits every note I want from an equipment commander: It cheats on equip costs and rewards you when you control equipped creatures, specifically when you attack with them
Its also a lot easier to go into other characters paths, allowing you to mix abilities much earlier in the game (for example, you can learn Black Magic spells while going down Yunas path)
The ability that defines Avalanche of Sector 7's power applies in all zones, not just the battlefield
These will always detail how and when you use them, although it should be noted that many abilities for lower level characters will often exert the card which is symbolised with a small icon indicating a turning arrow
Thats great news if its in your deck, though