Thunderbird vs Coburn

This is my layman's interpretation.  Would be interested to hear thoughts from people that know what they're talking about (rather than just up/down rampers).

Thunder has a massive ore reserve, nut my understanding is there are other factors that affect value during production.

	Column 1	Column 2	Column 3
0		Thunderbird	Coburn
1	Insitu tonnage	High!	Low
2	Insitu Grade	High!	Low
3	HM assemblage	Low	High
4	WHM Composition	Low	High
5	Strip Ratio	High 0.8	Good 0.5
6	Slimes Content	High 15.7	Low 2.7
7	Approvals	Most	All
8	Capex	High	Low
9	Opex???	?	?
10	Other Details???	?	?
11	Overall Value???	?	?

Thanks