I believe I saw one episode of Lost, so I don’t know much about it. Most of the reviews I read about The I-Land reference Lost, and
The Island suffers in comparison according to most reviewers.
I did not think The I-Land was that bad. There are only 7 episodes and they are all under an hour. The ten people on the island do not have any memories of their past, but they are all the person they were before waking up on the beach. A few episodes in, you discover what’s really going on, and you eventually learn why they were all sent to the island. There are some twists and turns along the way.
I would give it a B-.