No, subbers re-encode those RAWs, which are usually encoded at a lot higher bitrates than your average anime encodes, thus RAWs are sometimes HUMONGOUS in filesizes. With proper filtering, the the resulting file can look even better than the RAW with half the filesize easily.
Although since Menclave has `House who is able to capture transport streams, so yes, at least Menclave doesn't use the RAWs that show up on TT or Share. Why aren't transport streams distributed via BT, you might ask? Ridiculous filesizes. Average 24-minute episode is somewhere around 2-5 GB in size. Transport streams are basically as close as you can get to lossless with a lossy codec.
Transport streams are a rare candy though, since you basically have to have someone capable of capping transport streams in Japan for you.>>11902596
That's just the resolution, it's still upscaled from SD (and it shows), so it isn't actual HD.