What's off????
I outlined that in your post when I quoted it. It's in bold.
And, no you are not going to gain 2.5 lbs a week every week unless you get fat.
This is a "LEAN" bulking. It's physically impossible to lean bulk 2.5 lbs a week. It will never happen.
You'd have to increase you caloric intake by 250 calories a week. By the time you get done at 14 weeks, you are gona have to be eating 8000 calories a day. You'd end up a fat ass and in terrible physical health.