Is ROM of both P60 & P70 variant of Realme 3 same?

The Realme 3 smartphone, developed by Oppo, comes in two variants: one with the Mediatek P60 chipset and another with the Mediatek P70 chipset. The global variant has the P60 chipset, while the Indian variant has the P70 chipset. The model numbers for these variants are RMX1821 for P60 and RMX1825 for P70. The question revolves around the compatibility of the ROM (Read-Only Memory) for two different chipsets. According to Realme's official website, the ROM version 'RMX1821EX_11.A.22' seems to be intended exclusively for the RMX1821 device with the P60 chipset. The concern is whether it is feasible to install this ROM on the RMX1825 device, which has the P70 chipset, and whether it will function correctly. Alternatively, it would be helpful to know if there is a separate ROM available specifically designed for the P70 chipset.