I'd think the 5130 is closer to redundant on the 5212 than the 5205 is. True, the 5205 and the 5212 are both calendar watches and the 5130 is a worldtime. But the actual experience of wearing and looking at the watches? The 5212 and worldtime are both watches whose dials main visual style is a lot of (lovely) text concentrically around the edge of the dial, whereas the 5205 looks completely different.