Hello,
I want to analyze the differences of histone peaks between cell types. For that i obtained some bed files from the Roadmap Epigenomics project. However the data looks highly unspecific and covers mostly everything. Here is an example file and where i got it from.

For illustration I added a screenshot from IGV with H3M4me3 (a promotor mark).

I don't really know whats wrong, whether I used the wrong data source with unprocessed/filtered bed files (but if so, are there filtered ones?) or if this is correct (but if so, how could anything be concluded from that data).