kyverno pattern vs anyPattern

kyverno-test.yaml

name: policy-test
policies:
  - policy.yaml
resources:
  - resource.yaml
results:
  - policy: policy-test
    rule: policy-test
    resource: mypod
    kind: Pod
    result: skip
  - policy: policy-test
    rule: policy-test-any
    resource: mypod
    kind: Pod
    result: skip

out

Executing policy-test...
applying 1 policy to 1 resource...

 Note : The resource field is being deprecated in 1.8.0 release. Please provide the resources under the resources parameter as an array in the results field

│───│─────────────│─────────────────│────────────│────────│
│ # │ POLICY      │ RULE            │ RESOURCE   │ RESULT │
│───│─────────────│─────────────────│────────────│────────│
│ 1 │ policy-test │ policy-test     │ /Pod/mypod │ Pass   │
│ 2 │ policy-test │ policy-test-any │ /Pod/mypod │ Fail   │
│───│─────────────│─────────────────│────────────│────────│

Test Summary: 1 tests passed and 1 tests failed

Aggregated Failed Test Cases :
│───│─────────────│─────────────────│────────────│────────│
│ # │ POLICY      │ RULE            │ RESOURCE   │ RESULT │
│───│─────────────│─────────────────│────────────│────────│
│ 2 │ policy-test │ policy-test-any │ /Pod/mypod │ Fail   │
│───│─────────────│─────────────────│────────────│────────│

policy.yaml

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: policy-test
spec:
  rules:
    - name: policy-test
      match:
        any:
          - resources:
              kinds:
                - Pod
      validate:
        message: >-
          runAsGroup test
        pattern:
          spec:
            =(initContainers):
              - (name): "!istio-init"
                securityContext:
                  runAsGroup: ">0"
    - name: policy-test-any
      match:
        any:
          - resources:
              kinds:
                - Pod
      validate:
        message: >-
          runAsGroup test
        anyPattern:
          - spec:
            =(initContainers):
              - (name): "!istio-init"
                securityContext:
                  runAsGroup: ">0"

resource.yaml

apiVersion: v1
kind: Pod
metadata:
  labels:
    app: busybox
  name: mypod
spec:
  initContainers:
  - name: istio-init
    image: tempimagename
    securityContext:
      runAsGroup: 0
  containers:
  - name: busybox
    image: someothernonexistentimage
    securityContext:
      runAsGroup: 1