Two sectionals, one scorecard, the answer up top. Every number in a comparison is traceable to the same fact base as the main ranking; cells still under verification are left out rather than filled.
Sloan vs Eliot on verified fields: GH Best Sectional vs Best with Storage (https://www.goodhousekeeping.com/life/g31917213/best-sleeper-sofa/), sizes, prices, delivery.
Lovesac vs Burrow: 175+ fabrics vs tool-free assembly, starting prices per Bob Vila (https://www.bobvila.com/articles/best-sleeper-sofa/), Burrow homepage claims.
Modular sectionals rearrange and expand; custom sectionals are built to your specs and ship later. Compare West Elm Harmony, Lovesac, Burrow and Interior Define on stated fields.
Stated delivery windows for the sectionals on our register: 8 to 14 weeks for the Sloan, 4 to 8 for the Eliot, 4+ for the Harmony, and Burrow's days-not-months claim. Read with care.
Four sleeper mechanisms as Good Housekeeping defines them (https://www.goodhousekeeping.com/life/g31917213/best-sleeper-sofa/), with a bed-size check before you buy.