because PoW makes miners do math calculation stuff to select strongest miners. PoS lets any node process transactions within ~6 seconds.
What is the reason they do this?
GPU Miners are like Gaming Rigs with many cards. They generate around ~400 MH each depending on strength. Only takes a few AntMiners to disrupt a majority non-ASIC. Network TH>GH>MH>KH
This is why BCH is ASIC Only. GPU Mining Coins can get 51% attack easily.
Because you need Terahash (TH) Miner to even mine on BCH network. So network is filled with stronger miners only.
PoW requires very strong miners to be powerful enough to process a block. A single outdated miner is too weak to break even in rewards. Thus a pool of Antminers are required for profit
But validating the txs is the node's job, right ?
