You will have to review literature to reliably compare the degrading activity of these microbes on PE or conduct experiments to find this out for yourself.
Usha et al (2011) Screening of Polyethylene Degrading Microorganisms from Garbage Soil. Libyan Agriculture Research Center Journal International 2 (4): 200-204, (attached).
Hadad et al (2005) Biodegradation of polyethylene by the thermophilic bacterium
Brevibacillus borstelensis. Journal of Applied Microbiology, 98, 1093–1100, (attached).
Kathiresan K (2003) Polythene and Plastics-degrading microbes from the mangrove soil. Rev. biol. trop , 51. The article is online in the following link: http://www.scielo.sa.cr/scielo.php?pid=S0034-77442003000300003&script=sci_arttext