The MP1 is 7.5 years old now.
Nonetheless, the 64-bit Cortex-A35 is not the 64-bit replacement for Cortex-A7, but for the smaller core Cortex-A5, so it is actually slower than Cortex-A7 at the same clock frequency.
Cortex-A53, then Cortex-A55, were the 64-bit replacements for Cortex-A7.