are titles like Madworld and The Conduit going to actually sell?

[Reasonable]

I'm not really convinced Wii is a good platform for a title like Madworld (I mean in terms of the major demographic who seem to have purchased it not the console technically).

I don't think its too harsh to take the view that any action title, particularly a mature rated one, is statistically more likely to sell well on the 360 and/or PS3. It's just the way the demographics seem to lie for the consoles right now.

So, I hope they get to at least 500 K but each could easily go the way of No More Heroes I feel.  Hopefully I'm wrong, particularly for the Conduit which you would hope has the right marketing, etc. to ensure a solid 1M in sales.