Mykland P, Tierney L, Yu B (1995) Regeneration in Markov chain samplers. Journal of the American Statistical Association 90:233-241, Figure 1

What's wrong with this one?

This is like the last one: it contains almost no information. It's redundant, but so funny we couldn't help but include it.

What should have been done?

Plot percent differences, or just say the results are indistinguishable.