Actually, Rati is 'on par' with his counterpart 4th evolutions. Well it's 50/50. Both Pushan and Bhima have Mag feeding Table 6 along with Rati while Savitri, Diwari & Nidra are on mag 7 with the Mag cells for easier feeding. I don't know why Sega did this but it is what it is. Unsure how difficult it would be to switch their tables tbh.
If your unsure and would like some help feeding here are the tables which are also available from my guide linked in my sig. There is also a wiki with tons of information to help out.