Tommee Tippee Bottle

Hi mummies, anyone use before Philips Avent natural bottle and Tommee Tippee bottle? When using their teats for 0m+, I realised Tommee Tippee anti colic teat flow is dripping out 1 drop per sec whereas Avent natural teat flow doesnt drip out until a few secs later when I turn bottle upside down. Is Tommee Tippee teat flow faster den Avent?