docs: update README

README.md

@@ -13,21 +13,26 @@
 
 **A payment protocol designed for creators**, it bridges the gap between creators and fans, where fans can **donate, sponsor, subscribe**, and more, while creators receive **fees and yield**.
 
-## Features
-
-|                    | V4V   | Friendtech | Patreon | Coinbase Commerce |
-|--------------------|-------|------------|---------|-------------------|
-| Flexible strategy  | ★★★★★ | ★★★☆☆      | ★★★☆☆   | ★☆☆☆☆             |
-| Capital efficiency | ★★★★☆ | ★★☆☆☆      | ★☆☆☆☆   | ★☆☆☆☆             |
-| Permissionless     | ★★★★★ | ★★★★★      | ☆☆☆☆☆   | ★★☆☆☆             |
-| Tokenization       | ★★★★★ | ★★★☆☆      | ☆☆☆☆☆   | ☆☆☆☆☆             |
-
 - For fans, pay early and earn more;
 - For creators, long-term income from fees and yield;
 - Lightweight with flexible curve and yield strategies;
+- No protocol fee, any client can be charged via referral fee;
 - Stake what you need, and withdraw when you want;
 - Made for creators like startups, indie hackers and KOLs.
 
+## Why *V4V* is better?
+<div align="center">
+
+| Features           | V4V   | Friendtech | Patreon | Coinbase Commerce |
+|--------------------|-------|------------|---------|-------------------|
+| Flexible strategy  | ★★★★★ | ★★★☆☆      | ★★★☆☆   | ★☆☆☆☆             |
+| Capital efficiency | ★★★☆☆ | ★☆☆☆☆      | ★☆☆☆☆   | ★☆☆☆☆             |
+| Permissionless     | ★★★★★ | ★★★★★      | ☆☆☆☆☆   | ★★★☆☆             |
+| Tokenization       | ★★★★★ | ★★★☆☆      | ☆☆☆☆☆   | ☆☆☆☆☆             |
+| Protocol Fee       | ★★★★☆ | ★★☆☆☆      | ★☆☆☆☆   | ★★★☆☆             |
+
+</div>
+
 ## How it works？
 
 The contract uses a sigmoid bonding curve for dynamic pricing. When you buy, it mints tokens and drives prices up, then when you sell, it burns tokens and drives prices down. The staked ETH is allocated in an interest-rate market to generate sustainable rewards, which are then redistributed to the creators.