Difference between Dataloader and Import Wizard in Salesforce

Import Wizard
It supports more than 50000 records.
It supports only up to 50000.
It supports almost all standard and custom objects.
It supports Custom objects but only few Standard objects like Accounts, Solutions, Leads and Contacts.
It doesn’t support schedule export.
It supports schedule export.
Delete operation is available.
Delete operation is not available.
It requires installation.
It doesn’t require installation.
While importing, duplicates cannot be ignored.
While importing, duplicates can be ignored.