when severely outnumbered you must change tactics.. going head to head with the horde is suicide.
when the rooks got a piece a year or two ago the numbers were as you described but worse in the fact that that campaign went on for a half of year or more..
day in day out.. half of your country collapses (in 10 minutes at times sometimes leaving you 3 bases deep in enemy territory etc.. fun stuff..)
We had to adapt our tactics.. for one i felt no remorse flying the g10 under the circumstances and killing people in it.. and as such we adapted our tactics to just that.. fly latewar (fast) and more importantly disrupt the enemy's climbout as much as possible.. this means flying to wherever the enemy is upping from, either solo or with a wingman; and your whole purpose is to lower the enemy's alt with slashing attacks.. channel 1 (now 200) heckling thereafter and some more slashing attacks..
This would lower enemy attack alt (and morale when they start getting their k/d raped by our high alt vulching routine) at your defensive base by a average 3-4k ft when bad guys reach the target area allowing what few friendlies you have to mount a effective defense..
(10k - 3to4 k = effective defense... aka 6-7k attack alt..)
it was rather amusing to watch big pig planes (38 / 47's) dump all their ord after 1-2 passes on them.. and the brave ones who kept it on would usually bite the bullet after a quick saddle or blow all their alt/e to avoid you.. you then wep away to higher alts for safety and repeat over and over until they drive you out.. which is usually multiples trying climb on you then corner you... way i see it if they are coming after me great they are not pilliging my base with bombs.. (and these were the old days, fuel porkage was rampant.. hence entire war fronts would collapse in 10 mins.)
if your team the bish would dispatch 2-4 fighters to each attacking airfield you might be surprised how much disruption you can cause to a attack conga..maybe enough to stall resets for 4-8hrs even against worse odds then you describe (we did it as rooks)
also look at it like this, almost every vet of the "Rook Invasion" can smoke 95% of the other pilots in this arena in a best of ten due to the chaos and mismatch you describe.. we were baptised by fire... instead of quiting we got pissed off and organised because the alternative was getting our arse handed to us day in day out.. we chose to fight instead... where do you think the rook tactical ops nights were spawned from..
DoctorYo
PS: if the numbers continue slide against the BISH im shure some vets will gravitate to the target rich enviroment..(i would, bish still suck though

die bish die... i just dont think its at critical mass just yet.. )