I just noticed several PS3 games have DTS while their 360 counterparts only have regular Dolby Digital. This explains why I thought these games sounded better on PS3; because they did! Here's
HDMI Splitter 1x2 with Audio Extractor(HDMI Audio Output), 1 in 2 Out Audio Video Distributor
Buy Tobo 4K HDMI 4x1 Switcher 60HZ Extractor with ARC & IR Control for PS3/ PS4 /APLE TV/ HDTV. TD-449H Online at Low Prices in India - Amazon.in
Amazon.com: 4K HDMI Splitter 1 in 4 Out 1080p 3D, PCM7.1, Dolby TrueHD, DTS- HD Master Audio, Auto EDID, Threaded Power Supply, with Built-in ESD Protection (One Input Four Output) AV Access HDMI
4K@60Hz HDMI Matrix Switch Splitter 2 In 4 Out V2.0 2160P ARC UHD HDR Dual Audio Extractor IR Remote SPDIF Digital 5.1 AUX 3.5mm