cr calculation confusion

[vinnY]

was looking to doing a b16/b18 hybrid on an ek4
pieced together some parts and doing a little more research on the parts themselves to see if they'd work together.
parts in question;
b16a2 head
ctr cams
r dual valve springs
r valves
adjustible cam gears(haven't decided whether i really need them yet)

bottom end will consist of;
b18c2 bottom
ctr pistons
itr conrods
oem headgasket
b18 oil pump

doing some cr calculations and i seems to have gotten 2 very different results, i dunno where i'm going wrong here and i'm wondering if anyone can help clear it up for me

-- http://www.c-speedracing.com/howto/compcalc/compcalc.php --

block; b18c1/c5
		bore; 81.00mm
		stroke; 87.20mm
head; b16a/b - b18c5
		combustion chamber volume; 42.70cc
piston; pct (jdm b1b6b)
		piston dome displacement; 8.63cc
headgasket thickness; oem b-series 3-layer
		thickness; 0.0290in
		bore difference; 0.00mm
piston-to-deck height; oem b18a/b/c1/c5 - b20b/z
		height; 0.030in
*compression ratio; 11.7517:1
*displacement; 1797.56cc

-- http://www.zealautowerks.com/ --

block/crank; b18c - b16b/b18c
		bore; 81mm
		stroke; 87.20mm
		deck height; 212.3mm
head; b16a/b - b17a - b18c5
		combustion chamber volume; 42.70cc
piston; pct (jdm b16b)
		dome; 8.63cc
		comp height; 30.73mm
connecting rod; b18c1/c5
		rod length; 137.90mm
headgasket thickness; oem 3-layer
		thickness; 0.026in
		bore diff; 0.00
head milling and block decking; 0.000in
maximum operation rpm; 8000rpm
elevation; 0000feet
boost; 0psi
*static comp ratio; 12.74:1
*effective comp ratio; 12.74
*displacement; 1797.55cc
*rod/stroke ratio; 1.58
*piston-to-deck height; 0.006
*mean piston speed; 1930fps
*max piston acceleration; 132137fps^2

now idealy i'd like the cr of the first one, the second one sounds fairly high to me. and upon doing some research its quite high and hard to tune for reliability
anyone able to shed some light on this topic for me?

suggestions on parts and extra parts i might need are also welcomed

edit;
found another cr calculator, yet another different result!

-- http://technet.ff-squad.com/cr-calculator.htm --
pistons; pct
head; b16a
block; b18c
gasket; 3-layer
bore; 81mm
cr; 12