Regarding ingame resources specs :
-polycount around 7-8k tris for units and simpler models and 10ktris for warjacks and warcasters (including weapons and other attachments)
-texture 1x2048 for entire character (again including any weapons or additional attachments it might have)
For wireframe you can check some below
http://paultosca.com/newSite/AsphyxiousEW/C01.html
http://paultosca.com/newSite/AsphyxiousW/C01.html
http://paultosca.com/newSite/GreygoreW1/GreygoreW1.html
Hope this clears some things up.
Paul