TSS enrichement plot : Are scores different between paired and single end ?

Question

[ElCascador]

I'm using this script from ATAqc to compute my TSS enrichment score for ATAC-seq data. But my values are pretty high, around 20+.

I was wondering if this script, using the metaseq package was not counting paired end reads as 2 fragments ? I will run some more tests on single end data to see the difference but I can only do that later.