When I see the Halo series, for 360 the flop is Halo Combat Evolved Anniversary:

http://www.vgchartz.com/gamedb/?name=halo

it first week in USA is 489k:

http://www.vgchartz.com/game/51759/halo-combat-evolved-anniversary/USA/

USA Preorder was 396k:

http://www.vgchartz.com/preorders/40860/USA/

Now back in 2014, MCC preorders is only 70k at 6 weeks from launch:

http://www.vgchartz.com/preorders/41917/USA/

Will Halo MCC be the biggest flop? probably

No, Halo MCC is severely undertracked on VGChartz pre orders. No way it only has 70k.

Yup, flop confirmed. Next.

When a remake selling over 2m is considered a flop, you're in a good place.

Also your mistake is giving the preorder numbers here any weight.

Will Halo MCC be the biggest flop? No, no, and no.

I feel like you are using the word "flop" wrong, almost in a clickbaity way...

And I think it will sell a lot

Never ever take Vgchartz pre order numbers as gospel plus MCC is a remake/compilation so it was never bound to match new Halo games in the first place ...

Can we have a definition on flop before making claims, like flop=game that doesn't make profit or sell and makes 5% of profit

Lol do you really believe those pre-order numbers?

That is the problem.  We very rarely know how high development costs are for games, so even having a set definition won't really help.  But people are too quick to say flop

What is the line for the game to be considered a success/flop?? 1mil, 2mil.....5mil??