This is bad science. You compared the thing you had to the thing you wanted, and found a reason to pick the thing you wanted. Honesty should have compelled you to at least compare against a desktop–class machine, or even a workstation with a Threadripper CPU. Since you know that at least part of your workload is concurrent, and 14 CPUs are better than 10, why not check to see if 16, 32, or 64 is better still? And the linker is memory bound, so it is worth considering not just the quantity of memory but the actual memory bandwidth and latency as well.