I don't think you can compare the 2. From what I know, Anavar will give you good strength gains with not much mass at all and no water retention. Deca will give some good gains with some water retention. If you are going for mass then Deca but if you are looking to cut up then I think Anavar would be ideal for that as it has also been proven to work well on low cal diets
mustangs right what are you looking to do? my opinion anavar works better on woman.