Well I have played both demos.
I think that BLIC is much more complete.
The animations for both games are good but BLIC edges it. C2005 animations are much improve but the batsman still looks like hes holding thin air.
The Physics of the ball are alot better in BLIC, the ball literally flys off the pads on c2005, and then goes hardly anywhere when you actually hit the ball, this may however maybe my timing. I did not hit one four and i wasnt exactly playing defensively. BLIC however its very stasfying when you play the correct shot to watch it fly off the middle for four. However it doesnt always go for four, just a bit more realism. It rewards inteeligence aswell. The CPU sets correct field which will contain your batsman if the keep hitting off drives for four they will variate the bowling or set an offside field. If you mindlessly try and smash sixes without thinking about fielder positions, you will get out. You have to pick the right balls to hit otherwise you will get out. You can push singles hitting into gaps and keep the score ticking over which is near impossible to do in c2005.
Bugswise, I didnt experience any in c2005 and ive play for about 75mins but i havent bowled so i havent experienced it fully. BLIC has one or two minor ones such as bowlers following the ball.
Bowling in BLIC is great, its easier to bowl fast with a better bowler and you can really tell the difference between a bowler like Harmison to say Collingwood. Both games seem to have spin and swing. My main problem with BLIC is that the bowling meter is very unforgiving if you dont get it almost completely on the line it will go at 60mph which you are unlikely to see say flintoff ever do in a real game.
Extra Features
Highlights from EA are nothing special and EA track are nothing recognisable. BLIC's feilding meters are excellent and a great addition. the commentry is also great. I hear something new on each play.
Graphics Ea is ok, players do look weird stadia is good. BLIC player faces are recognisable. The bats etc are great and very detailed right down to jaguar logo on micheal vaughans bat.
Overall
BLIC-9, very complete simulator, yet accesible
C2005-7.5-8 Seems OK from batting big improvement from c2004. I might get it.