[SSD performance] Dell XPS 13 vs Lenovo X1 Carbon

Hello, I'm planning to buy one of those laptops (XPS 13 9360 256GB and X1 Carbon 2017 256GB) and I've found out, that the performance of SSDs is very different on these devices:

Dell:
Sequential Read: 1233 MB/s
Sequential Write: 732.6 MB/s
512K Read: 1036 MB/s
512K Write: 439.9 MB/s
4K Read: 35.55 MB/s
4K Write: 130 MB/s
4K QD32 Read: 536.9 MB/s
4K QD32 Write: 218.3 MB/s

Lenovo:
Sequential Read: 1827 MB/s
Sequential Write: 1383 MB/s
512K Read: 814 MB/s
512K Write: 1098 MB/s
4K Read: 60.97...

[SSD performance] Dell XPS 13 vs Lenovo X1 Carbon

[SSD performance] Dell XPS 13 vs Lenovo X1 Carbon