Ok, the only things I see that would cause "slowness" are a couple of your mount points.
/dev/sda2 on /host type fuseblk
gvfsd-fuse on /run/user/the_paladin/gvfs type fuse.gvfsd-fuse
/dev/sda2 should probably be mounted via fstab using a kernel level driver instead of via fuse. You should be able to mount an ntfs partition (guessing) via fstab without using fuse. (I do not know if this will break wubi installs)
That may gain you some speed, specially if you accessing any data on /host.
Now your two examples are a different matter. If memory serves Minecraft is Java. You can try different java versions (like sun v.s. OpenJDK) or try some command line arguments. This post may help
Block Story I don't recognize.
Wubi however will result in a much slower system then a native install. Usually the bottle neck is around disk access. More details at that link.
TL;DR; if you want the best performance don't use wubi. When benchmarking make sure to use something objective. Phoronix Test Suite is generally well liked. Run it in both Linux and windows then use that data to decide which is faster in what areas. Using games as your benchmark is not going to give you a good idea.