[D] Is Mamba scalabe as Transformer? or just another efficient model?

\*scalable
The author of Mamba claim ' Mamba-3B model outperforms Transformers of the same size and matches Transformers twice its size '.

How about some model like Mamba-13B (just an assumption) vs Mixtral 8x7B with large pre-training data? Has anyone experimented with this?

13b author claim data machinelearning mamba mixtral mixtral 8x7b pre-training scalable training training data transformer transformers