Once my collaborator and I have got rejected a good paper on the basis that the proof was too simple. Then we have submited it without changing a word to another journal and it was accepted with a praise for the simplicity of the proof (and I suspect the both journals use the same pool of referees). Conclusion: one shouldn’t have too much feelings about a single referee report, but just check it for advices which may be useful and neglect points on which you disagree strongly (unfortunately it takes on average half a year to get each report, so it may take time to get it accepted).

PS. I have once as a referee rejected a paper on the basis that there was an unfixable mistake in a proof, but then got to referee it again with the same mistake in the proof – so some points of disagreement can not be neglected (but it has nothing to do with your case)

]]>