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We write the thermodynamic Bethe ansatz for the massive OSp(2|2) Gross Neveuand sigma models. We find evidence that the GN S matrix proposed by Bassi andLeclair [12] is the correct one. We determine features of the sigma model Smatrix, which seem highly unconventional; we conjecture in particular arelation between this sigma model and the complex sine-Gordon model at aparticular value of the coupling. We uncover an intriguing duality between theOSp(2|2) GN (resp. sigma) model on the one hand, and the SO(4) sigma (resp. GNmodel) on the other, somewhat generalizing to the massive case recent resultson OSp(4|2). Finally, we write the TBA for the (SUSY version of the) flow intothe random bond Ising model proposed by Cabra et al. [39], and conclude thattheir S matrix cannot be correct.

Scattering and duality in the 2 dimensional OSP(2|2) Gross Neveu and sigma models