Let's take a look at some numbers.
127 HC per win low average
180 HC per win high average
15 minutes per match average (averaged across all gametypes, excluding co-op)
6408 HC per weapon (2 weapons per mech)
5128-6510 per HC T3 Item (Because the cheaper items are useless)
3846-5128 per HC T2 Item (Because the cheaper items are useless)
T1 Items not listed, as most are free.
1920 HC per 3 Slot Internal
1280 HC per 2 Slot Internal
640 HC per 1 Slot Internal
Cost to unlock all weapons for a mech: 12816 HC
Average cost to buy full set of T2 or higher items: 7397 HC
Average cost to buy full set of internals: 3840 HC
Cost to fully outfit 1 mech: 24053 HC
Cost to fully outfit current roster (w/o Cupcake): 408901 HC
Mech purchase cost included: 570377 HC
Low average grind
Grind time to fully outfit all mechs (w/o any Daily Bonus): 1123 hours (47 days)
Grind time to fully outfit all mechs (with all Daily Bonuses): 1007 hours (42 days)
High average grind
Grind time to fully outfit all mechs (w/o any Daily Bonus): 792 hours (33 days)
Grind time to fully outfit all mechs (with all Daily Bonuses): 735 hours (31 days)
Keep in mind, all these numbers (especially the high average) are extremely optimistic, as they do not account for losing, the wait times between matches, or buying more than 1 set of items and internals.
To get anywhere near these numbers you would need to get back to back matches with minimal wait times, and win constantly.
EDIT: This also assumes you are able to purchase everything right away, and does not account for experience gain.
Edited by AsianJoyKiller, March 02 2014 - 02:43 AM.