He is melee and can be harassed by ranged heroes like Queen of Pain, Puck and these can also dodge his ult( Blink, Phase Shift). This is kind of interesting but viable option for Juggernaut. You shine most at the mid game and you should end the game fast if you are the main carry as the real hard carries are going to show up with their items farmed. Also while playing as the main carry do not farm all game.
However if there is another harder carry than Yurnero you gotta leave the safelane to them (if they want). Safelane Juggernaut is not the hardest carry, but he can be played at the safelane if there is another carry on the team(example is Lone Druid at the jungle).