The 737 hourly pay rate at the time was 25-30% more than the 767 credit hour rate. In a given 8 week roster period we would fly about 140-145 hours and get paid 160. They'd fly 145 and get paid 145. If our pay rate was (say) $100/ hour that meant we got paid $16000 for the 8 weeks. The 737 equivalent pay rate was $125- $130. They got paid more than us for the same flying..... and the 767 carried 30-70 more passengers depending on the config.
As another example, I remember one QF management pilot encouraging us to consider operating under the SH award as 'it would be better'. My response was 'sure.... as long as we get the same hourly rate as the A300 crew' (which I think was a bit more than 30% more than the then 767 credit hour rate... it was certainly more than the 737 rate at the time). He withdrew that line of argument.