Not saying its bad but i follow guy on youtube and he played infamous 1 and 2 his infamous 1 videos were 109 parts and only 79 for infamous 2.

Again not really bad i heard there is bigger difference in playing good or evil for missions and story this time and powers.

I thought inFamous 2 was longer, but I spent more time collecting blast shards in 2 than I did the first, and the various crimes around New Marais may have made the game seem longer.

Although the save games don't say how long I've played, I'd swear it's been longer for me. 

I'm not sure if it was shorter than the first one it seemed about the right length for that kind of game. I never got bored of playing it and I felt compelled to play it a second time for the other set of powers, where as in my opinion it felt more of a grind to do that in the the first one. Saying that I did complete it in the first 24 hours of owning it so I guess it could be shorter looking back at the first one which took me a few days, but you definitely get more bang for your buck with number 2 and there's lots of collectables and side missions to extend the duration of play.

It feels about the same length as the first. I will say it did feel significantly easier than the first. That may have been why the LPer you follow had significantly fewer parts for inFamous 2. Also, you can't really judge the length of the game based on someone's LP. It is what you make of it, same case for multiple sandbox titles. 
The UGC also extends the game's life significantly. 

they both have 40 story missions each.

Is this mystery guy...DSP by any chance xD...Couldn't it just be the length of the videos or what he does in-between missions?

I just beat 2 and I say it feels the same length

It feels about the same length as the first. I will say it did feel significantly easier than the first. That may have been why the LPer you follow had significantly fewer parts for inFamous 2. Also, you can't really judge the length of the game based on someone's LP. It is what you make of it, same case for multiple sandbox titles. The UGC also extends the game's life significantly. 

Depends on what you do.

@ESREVER said:

It feels about the same length as the first. I will say it did feel significantly easier than the first. That may have been why the LPer you follow had significantly fewer parts for inFamous 2. Also, you can't really judge the length of the game based on someone's LP. It is what you make of it, same case for multiple sandbox titles. The UGC also extends the game's life significantly. 

How much easier? I'm playing through the first one right now on hard and it feels pretty easy (but not too easy). If this game is as combat focused as the first, it could get tedious really fast if it offers no challenge.

Seems about the same length as the first.

I'll probably put several more hours into it though, making a Metroidvania style mission is time consuming.

inFamous 2 did seem shorter to me. I played through and collected every bird, blast shard, and did all the side quests before finishing the game and I don't think I spent as much time as I did in the first one. I even went back a second time to do the bad karma stuff and blew through it, since I wasn't worried about collecting everything again.

For inFamous 2, I timed my second playthrough as Evil Cole on Hard and it took me roughly 8-9 hours just doing pure campaign stuff. No dead drops, sidemissions, shards, and etc. Just Story missions. I didn't skip all the cutscenes though. 

Oh also, I timed my second playthrough as Evil Cole on Hard and it took me roughly 8-9 hours just doing pure campaign stuff. No dead drops, sidemissions, shards, and etc. Just Story missions. I didn't skip all the cutscenes though

@ESREVER said:

Oh also, I timed my second playthrough as Evil Cole on Hard and it took me roughly 8-9 hours just doing pure campaign stuff. No dead drops, sidemissions, shards, and etc. Just Story missions. I didn't skip all the cutscenes though

Which InFamous?

according to this http://videogamelength.blogspot.com/2009/07/length-of-video-games-for-ps3.htmlit's just as long as the first if you do a comparable amount of sidemissions, and they record their gametimes. might seem shorter if you're already good at the game going into it after playing the first?