Why SAME settings on Android Studio 3.2 work fine, but SAME settings on Eclipse not work?

I have 2 android projects. Project#1 - write on Android Studion 3.2 Project#2 - write on Eclipse IDE

On Project#1:

On Android Studio in app/build.gradle I has:

  minSdkVersion 18
targetSdkVersion 28

and in AndroidManifest.xml

      android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"

And project success build and run. Nice.

On Project#1 On Eclipse in AndroidManifest.xml I has:

<uses-sdk
        android:minSdkVersion="18"
android:targetSdkVersion="28" />

and in section application:

 <application
     android:name="my_project_name"
    android:allowBackup="false"
    android:logo="@drawable/l_factura"
    android:roundIcon="@drawable/ic_launcher"

But in this case project not build. I get warning:

Attribute "roundIcon" is only used in API level 25 and higher (current min is 15)

Why SAME settings on Android Studio 3.2 work fine, but SAME settings on Eclipse not work?