noooooooooooo! econ 1002 is hardly maths based! its econ1001 and even then (although i admit i do whinge abot the maths component in this) now that i look at it, its really nothing. Basic algebra (equation of a line, make y the subject, find the gradient, solving basic equations, simultaneous equations) and a teeny bit of calculus (1st deriviatives, stat points and thats it really...even if you dont know any of this, someone can give you a crash course in 5 minutes flat, im serious).
The course does involve numerical concepts (more so than in macro) but its negligable in terms of difficulty. the hard part lies in meshing all the concepts together well enough to be able to tackle q's from all angles.
Edit: you can confirm this with melbournian i guess but from his mks (66 in micro and 81 in macro?), i assume macro is lots better