Here’s something I wrote 2 months ago, not long after I champed him and during a week he was boosted:
Tatercat wrote:
"For those on the verge of champing 4* Luke Cage and needing motivation, I champed him Tuesday and here’s his numbers for yellow and red at 5 covers while boosted (from lvl 271 to 376) in the event:

Fortifies up to 3 friendly special tiles, then does 4439 damage for each fortified tile on the board. Iron Fist partner creates a 712 protect tile.

Does 18997 damage, or 30395 if there are no enemy Strike, Protect, or Attack tiles on the board.
I’ve been doing 5/3/5 so far and he’s been fun, though he’d be more effective in a pvp with lots of Goon nodes, to constantly be triggering his black to generate protect tiles, which in turn he could then fortify. But there’s barely any goon nodes in DP vs MPQ, so there’s been lots of times when I’ve got yellow ready but can’t fire it. (Bring a special spamming partner).
But that red is a lot more impressive than I thought. Even if there are enemy special tiles out, 18997 damage at 13 red ap is actually more cost effective than a comparable level Hulkbuster at the same ap cost. Even my lvl 281 Hulkbuster (boosted to 379) came up short, with 1386 per red ap for a total 18018 damage for 13ap."
Still use C4ge a lot, boosted or not. He’s the most reliable special tile producer against goons, and makes him very popular with the ladies (Wasp, 4* Carol, Medusa) Even if he’s just there to spit out a defense tile and just tank, he’s very good at that. With all the buffers in the game, you don’t even have to have black at 5. I respec him a lot, depending on the situation.
I should have 4*Iron Fist champed in the new few days, so I’ll see how/if they work as a duo. So far it looks like they compliment each other well, you never have to fight over the same color ap. Thinking Medusa would be a good 3rd for that team.