The Sony are fakes. Take a look at the battery list of old4570 or the test result:
Only 970 mAh @ 500mA discharge rate.
Next point protection: I have never seen 18650 of Sony, Panasonic, Sanyo or LG with protection. They produce them for business clients (as a part for laptops) not for endconsumer.
Other people built in a protection and sell them. This are people who build AW. Redilast or XTAR batteries.