With a new A14 chip combined with intel stagnation, it wouldn't be too crazy to see a 50-100% increase, especially if you looked at multi-core scores.
Also first i7 chip was released in 2008. (The chip you refer to appears to be modern though, from 2018.)
To prevent any misunderstandings, I agree A13 has performance comparable to a modern laptop. I just don't think Geekbench is a right tool to measure that difference.
What does that even mean? The Intel platform is running Android?
Linux: https://browser.geekbench.com/v5/cpu/2638097 Windows: https://browser.geekbench.com/v5/cpu/2635048
Geekbench is a terrible benchmark.
In my own personal experience, running Geekbench on many machines, Geekbench scores are pretty close running between Windows and Linux on the same machine. At least for compiling code (my main use for powerful machines), their compilation benchmark numbers also fairly closely match compilation times I observe.