Is it not ?
Shame I like blitz on the pc, its pretty good and supports custom types etc
Yup, totally different... The Amiga version is actually more powerful due to it being more low level... That said the PC version uses DirectX so you have so much more powerful hardware to run on... swings and roundabouts

Oh, then you have BlitzMax, which replaces the PC version, and offers greater type support and a degree of object oriented programming.
-Edit- I should add that the PC version of Blitz extended the idea of types with something more similar to Obj-C's dictionaries... and gets a lot of power from that!
Really it all pales in comparison to C/C++ (or my favourite Obj-C) with good support libraries... SDL was my I/O library for most of the last 10 years (before I moved to Cocoa on the iPhone).