Well, the only significant difference I see in BTC in 2017 and 2018 is the price, asides that  the difference between 2017 & 2018 is that towards the end of last year, people were investing in bitcoin and the market grew but towards the end of this year 2018, people withdrew their investments which is one of the reasons the market fell to this state. There was simply a huge pump in the market in 2017 & a huge dump the year in 2018. I hope the bull run comes soon as we are expecting and the market stabilises, that's my hope for the nearest future.