I found the data sheets for both of the sensors in question, which give some seemingly interesting numbers. I say seemingly because I don't even know the metric, let alone what the numbers mean, but I can only assume bigger is better:
Sony IX205AL (314e mono):
http://www.sony.net/Products/SC-HP/d.../E98619D7X.pdf
[INDENT]
Sensitivity:Symbol: S
Min: 360
Typ: 450
Unit: mV
Saturation signal:
Symbol: Vsat
Min: 450
Unit: mV
Dark signal:
Max: 16
Unit: mV
Dark signal shading:
Max: 4
Unit: mV
Sony ICX285AL (314L OSC):
http://www.sony.net/Products/SC-HP/d.../E00Y42B3Z.pdf
[INDENT][INDENT]
Sensitivity 1:
Symbol: S1
Min: 1040
Typ: 1300
Unit: mV
Sensitivity 2:Symbol: S2
Min: N/A
Typ: 4000
Unit: mV
Saturation signal:
Symbol: Vsat
Min: 850
Unit: mV
Dark signal:
Max: 11
Unit: mV
Dark signal shading:
Max: 4
Unit: mV
The OSC has a more rounded spectral sensitivity curve as well. Assuming I'm correct in that bigger is better, it looks like the OSC is waaaay more sensitive.